pg_hba.conf hostname todo

Hello,

Per the TODO list:

Allow pg_hba.conf to specify host names along with IP addresses 

Host name lookup could occur when the postmaster reads the pg_hba.conf
file, or when the backend starts. Another solution would be to reverse
lookup the connection IP and check that hostname against the host names
in pg_hba.conf. We could also then check that the host name maps to the
IP address.


I was considering trying to attack this for 8.3. My thoughts are the
following:

Allow one to specify a FQDN or a simple wild card DN. E.g;
*.commandprompt.com.

A valid entry would look like this:

host    all         all         *.commandprompt.com          trust
host    all        all        www1.postgresql.org         md5

Thoughts?

Joshua D. Drake

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